[2.x] Symfony et conversion PDF

bonsoir à tous, je veux convertir le contenu de fichier.html.twig en PDF. j'ai utilisé le bundle TCPDF et lors de l'affichage m'affiche cette erreur:

Citation:

TCPDF ERROR: Please explicitly set action attribute path!

Voici mon code :

Code:

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public function printAction($id)
    {
        $em = $this->getDoctrine()->getManager();
        $user = $em->getRepository('MonprojetBundle:Compte')->find($id);
        $emp=$em->getRepository('MonprojetBundle:Employe')->findOneByIdCpt($id);
 
        $pdf = $this->get('tcpdf');
 
 
        // set document information
        $pdf->SetCreator(PDF_CREATOR);
        $pdf->SetAuthor('');
        $pdf->SetTitle('TCPDF Example');
        $pdf->SetSubject('TCPDF Example');
        $pdf->SetKeywords('TCPDF, example');
 
        // remove default header/footer
        $pdf->setPrintHeader(false);
        $pdf->setPrintFooter(false);
 
        // set default monospaced font
        $pdf->SetDefaultMonospacedFont(PDF_FONT_MONOSPACED);
 
        // set margins
        $pdf->SetMargins(PDF_MARGIN_LEFT, PDF_MARGIN_TOP, PDF_MARGIN_RIGHT);
 
        // set auto page breaks
        $pdf->SetAutoPageBreak(TRUE, PDF_MARGIN_BOTTOM);
 
        // set font
        $pdf->SetFont('times', '', 12);
 
        $pdf->AddPage();
 
        // set some text to print
 /*       $txt = <<<EOD
TCPDF Example 1
Default page header and footer are disabled using setPrintHeader() and setPrintFooter() methods.
EOD;*/
 
        $html =$this->get('templating')->render('MonprojetBundle:Admini:apercu_employe.html.twig',  array(
            'user'      => $user,
            'emp'      => $emp,
 
        ));
 
 
       $content=$html->getContent();
        $pdf -> writeHTML($content);
 
        $pdf->Output('example_002.pdf', 'I');
 
 
        return $this->redirect($this->generateUrl('homepage'));
    }